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JS1-11 questions. inputs and outputs etc.

Old 05-05-2013, 08:40 PM
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Default JS1-11 questions. inputs and outputs etc.

Doing a MS3x install on a 2001 Miata, attempting to do it parallel.

I am starting with an MSQ from Y8s on Miataturbo.net (here too I think) and used his pinout spreadsheet to start.

I didn't realize that Y8s modified some stuff on his board that I didn't, so I am trying to fix those problems so I can have a reliable and fully functioning auto.
Here is my anthology, starting with where it pertains to this thread: https://www.miataturbo.net/build-thr...3/#post1008437

Basically here is the issue. Car runs. Unfortunately so does the A/C compressor... constantly. Matter of fact I think I over-pressured it yesterday because I vented A/C compressor oil. Before I can find out how much damage I did, I need the darn compressor to stop running so I can bring it to a friend who has a lift and better tools.

The question I need answered right now, is this. I need to have an input and output for my AC. I need an output for purge control. JS11 is in use by my knock sensor so I can't choose that. JS5 is in use by my on board 2nd MAP. Not all inputs and outputs are selectable in the various dialog boxes in Tunerstudio. Not sure why... The labeling is a bit confusing. Couldn't they have labeled all generic inputs and outputs with easily discernible codes?

How does this work? Safe?
M25 IAC1A to JS4 - A/C Pressure switch
M27 IAC1B to JS1 - Check Engine
M29 IAC2A to JS2 - A/C Switch
M31 IAC2B to JS10 - Purge Control

Cross posted on MSEXTRA.com as well: Megasquirt MSEXTRA / MS3EFI • JS1-11 questions. inputs and outputs etc. (View topic)

Reply here or there, I don't care. THX for help.
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Old 05-05-2013, 10:01 PM
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Answer to the above question? Don't do it. Just smoked my EMS.

Check out build thread for details.
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